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GaryK [48]
3 years ago
13

To solve this system using the addition method, you would need to multiply the first equation by what number in order for the y'

s to add out?
3x - y = 3

-2x + 2y = 6
Mathematics
1 answer:
yanalaym [24]3 years ago
8 0
You multiply 3x - y = 3.
So then it's:
6x - 2y = 3
-2x + 2y =6

which equals 4x = 9
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Type the correct answer in the box.Use numerals instead of words. If necessary, use / for the fraction bar.
Vaselesa [24]

Answer:

<h3>AC = 13.05 inches </h3>

Step-by-step explanation:

To find AC we use cosine

cos ∅ = adjacent / hypotenuse

AC is the hypotenuse

BC is the adjacent

BC = 10”

cos ∅ = BC / AC

cos 40 = 10/AC

AC = 10/cos 40

AC = 13.05 inches

Hope this helps you

6 0
3 years ago
The variable y varies directly as x. when x=20, y=12. what is the value of y when x=15?​
SpyIntel [72]

Answer: its 21

Step-by-step explanation:

just did it

6 0
3 years ago
Hey, could someone please help me with this? Thanks.
Novosadov [1.4K]

Answer:

Part A: 1. (1, 0.5) 2. (2, 1) 3. (3, 1.5) 4. (4, 2) 5. (5, 2.5) 6. (6, 3)

Part B: Yes, this relation is in fact a function.

Part C: No, it would not be a function.

Step-by-step explanation:

Part A: Well, you start at 1 hr. right? yes. So then, at the very beginning at the problem, it says the candle burns at the rate of 0.5 in. per hour. So for 1 hour, the candle will burn .5 inches. At 2 hours, it will burn off 1 whole inch.

Part B:  1 hr. = .5 in. burn,  2 hrs. = 1 in. burns,  3 hrs. = 1.5 in. burns,  4 hrs. = 2 in. burns,  5 hrs.= 2.5 in. burns, 6 hrs. = 3  in. burns.

Part C:  1 hr.= .45 in. burn, 2 hrs. = .9 in burn,  3 hrs. = 1.35 in. burns, 4 hrs. = 1.8 in. burns, 5 hrs. = 2.25 in. burns, 6 hrs. = 2.7 in. burns.    It does not go at a constant rate. The number of inches are all over the place.

Hope this helps you out!! (:

4 0
3 years ago
In an animal shelter, the ratio of dogs to cats is 5 to.There are 25 dogs. Write and solve a proportion to find the number c of
pishuonlain [190]

Answer:

5 cats

Step-by-step explanation:

  d/c = 5/1

    d = 25      Substitute in the proportion

25/c = 5/1     Multiply both sides by c

  25 = 5c/1

  25 = 5c      Divide each side by 5

    c = 5

There are five cats.

4 0
3 years ago
Solve for n. 9n + 120 = 336
rewona [7]

Answer:

the answer is n=24

Step-by-step explanation:

hope this helps :)

8 0
3 years ago
Read 2 more answers
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